JP2011104167A - Cover for electric water heating apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cover for an electric water heating apparatus improving durability while reducing cost. <P>SOLUTION: A lower cover member 3 includes an outer member 31 having an opening 31a, and an inner member 32 disposed to block the opening 31a of the outer member 31. The inner member 32 is formed of a heat resistant material in a state of having a downwardly opened recessed part 32a and a ventilation port 32b serving for communication between the inside and outside of the recessed part 32a. The inner member 32 is provided in such a state that the edge part 32g of the recessed part 32a abuts on or is close to the upper face of an inner cover plate 4 over the whole periphery, and a ventilation chamber 8 is formed partitioned between the recessed part 32a of the inner member 32 and the upper face of the inner cover plate 4. The inner cover plate 4 is provided with a steam delivery port 41 communicating with the ventilation chamber 8, and a steam passage 6 allows steam generated from an apparatus body to flow through the steam delivery port 41 of the inner cover plate 4, the ventilation chamber 8, the ventilation port 32b and a steam discharge port 2a of an upper cover member 2 and to be discharged to the outside from the steam discharge port 2a. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  In the present invention, a steam passage for exhausting steam generated from an apparatus main body below the inner lid plate to which the upper lid member, the lower lid member below the upper lid member, and the inner lid plate below the upper lid member are integrally assembled. This relates to the lid of the electric water heater provided through the inner lid plate, the lower lid member, and the upper lid member.

  The lid of the electric water heater covers the opening of the hot water storage section provided in the apparatus main body, and the steam generated from the apparatus main body is passed through the steam passage provided through the inner lid plate, the lower lid member, and the upper lid member. It is configured to discharge to the outside. Incidentally, specific examples of the electric water heater include an electric kettle, an electric kettle, a boiling humidifier, and the like.

  In the lid of such an electric water heater, conventionally, each of the inner lid plate and the lower lid member is configured to cover substantially the entire area of the opening of the hot water reservoir, and the upper surface of the inner lid plate and the lower surface of the lower lid member. A space is formed over substantially the entire surface between them, and the steam passage is configured to allow steam to flow through the space between the inner lid plate and the lower lid member (for example, Patent Document 1, 2).

No. 2004-81329 2006-75292

  By the way, since the inner lid plate is exposed to the hot water storage part of the apparatus main body, it is formed of a material having excellent heat resistance such as metal. On the other hand, the lower lid member is generally formed of a low heat resistant material with reduced heat resistance in order to reduce the cost of the lid of the electric water heater.

However, in the lid of the conventional electric water heater, since the lower surface of the lower lid member is exposed to the vapor generated from the apparatus main body over substantially the entire surface, if the lower lid member is formed of a low heat resistant material, the lower lid member It was easily affected by steam. As a result, the durability of the lid of the electric water heater may be reduced.
On the other hand, in order to prevent the durability of the lid of the electric water heater from being lowered, if the entire lower lid member is formed of a heat-resistant material, the cost increases and the price of the lid of the electric water heater increases.

In addition, a heat-resistant resin as a heat-resistant material generally has no gloss due to its rough surface, and it is difficult to be colored into a desired color because it originally has a color such as cream. When the entire member is formed of a heat-resistant resin, there is a problem that the appearance is impaired.
Further, although there is a space between the lower lid member and the upper lid member, a space for forming a steam passage is formed over substantially the entire surface of the lower lid member, so that a space is formed between the lower lid member and the upper lid member. There is also a problem that the existing space becomes narrow and the space between the lower lid member and the upper lid member cannot be effectively used. This space is used as a space for storing a heat insulating material or the like for improving the energy saving effect.

  This invention is made | formed in view of this situation, The objective is to provide the lid | cover of the electric water heater which can improve durability, aiming at cost reduction.

In order to achieve the above object, the lid of the electric water heater according to the present invention comprises an upper lid member, a lower lid member below the upper lid member, and an inner lid plate below the upper lid member, and a device below the inner lid plate. A steam passage for discharging steam generated from the main body to the outside is a lid of an electric water heater provided through the inner lid plate, the lower lid member, and the upper lid member,
The characteristic configuration is configured such that the lower lid member includes an outer member having an opening and an inner member arranged to close the opening of the outer member.
The inner member is formed of a heat-resistant material in a state having a concave portion that opens downward and a vent that communicates the inside and outside of the concave portion.
The inner member is provided in a state where the edge of the concave portion is in contact with or close to the upper surface of the inner lid plate over the entire circumference, and between the concave portion of the inner member and the upper surface of the inner lid plate. A ventilation chamber is formed as a partition,
The inner lid plate is provided with a steam outlet communicating with the vent chamber,
The steam passage allows the steam generated from the apparatus main body to flow through the steam delivery port of the inner lid plate, the vent chamber, the vent port, and the steam discharge port of the upper lid member, and from the steam discharge port to the outside. The point is that it is configured to discharge.

  According to the above characteristic configuration, the steam generated from the apparatus main body is a vapor delivery port of the inner lid plate, a vent chamber formed between the concave portion of the inner member and the upper surface of the inner lid plate, and the concave portion of the inner member. The air flows through the vent hole provided in the above and the steam outlet of the upper lid member, and is discharged to the outside from the steam outlet.

That is, the steam generated from the apparatus main body is partitioned between the inner lid plate and the lower lid member, between the concave portion of the inner member constituting a part of the lower lid member and the upper surface of the inner lid plate. It flows only through the ventilation chamber and flows out of the ventilation chamber from the ventilation port. After that, it is led to the vapor discharge port of the upper lid member, so that the outer member of the lower lid member is prevented from being exposed to vapor as much as possible. can do.
Further, the inner member exposed to the steam is formed of a heat-resistant material, so that the influence of the steam can be reduced. On the other hand, since the outer member that can suppress exposure to steam as much as possible can prevent deterioration even if formed with a low heat resistant material, by forming the outer member with a low heat resistant material, Cost can be reduced.
Therefore, it has become possible to provide a lid for an electric water heater that can improve the durability while reducing the cost.
Further, the outer member of the lower lid member is configured to form the side peripheral surface of the lid, and the outer member is formed of a low heat resistant resin, so that the low heat resistant resin is glossy and desired. Since it is easy to color, the appearance can be improved as compared with the case where the entire lower lid member is formed of a heat resistant resin.
Furthermore, since a wide space can be secured between the outer member of the lower lid member and the upper lid member, the space between the lower lid member and the upper lid member is effectively used for, for example, filling a heat insulating material. Energy saving effect can be improved.

According to a further characteristic configuration of the lid of the electric water heater according to the present invention, a fitting portion that opens obliquely downward toward the outside is provided along the circumferential direction of the concave portion on the outer peripheral side of the edge portion of the concave portion of the inner member. Provided in a ring,
An annular sealing member is provided so as to be fitted in the fitting portion in a state of being in contact with the upper surface of the inner lid plate.

According to the above characteristic configuration, the annular sealing member is provided by being fitted into the annular fitting portion provided so as to open obliquely downward toward the outside on the outer peripheral side of the edge portion of the concave portion of the inner member. Therefore, the sealing member is disposed on the outer peripheral side of the edge of the concave portion.
In other words, in order to prevent vapor from leaking out of the ventilation chamber from between the edge of the concave portion of the inner member and the upper surface of the inner lid plate, a sealing member that seals the space between them is provided. However, since the sealing member can be disposed on the outer peripheral side of the edge of the concave portion, exposure of the sealing member to steam can be suppressed as much as possible.
Therefore, it has become possible to suppress degradation of the sealing member as much as possible.

According to a further feature of the lid of the electric water heater according to the present invention, the upper surface of the inner lid plate is provided with an annular groove portion into which the edge of the sealing member and the concave portion can be fitted,
The sealing member and the edge of the concave portion are fitted into the groove portion in a state where the sealing member is sandwiched between the inner surface of the fitting portion and the inner surface of the groove portion.

According to the above characteristic configuration, the sealing member is interposed between the inner surface of the fitting portion and the inner surface of the groove portion in a state where the edge of the concave portion of the inner member and the sealing member are fitted into the groove portion on the upper surface of the inner lid plate. Since it is clamped, the sealing member can be accurately held in a pressed state between the fitting portion of the inner member and the groove portion of the inner lid plate.
Accordingly, it is possible to accurately prevent the leakage of steam to the outside of the ventilation chamber, and thus it is possible to accurately prevent the deterioration of the members provided outside the ventilation chamber, such as the outer member of the lower lid member.

  According to a further characteristic configuration of the lid of the electric water heater according to the present invention, a plurality of connecting portions that connect the inner member and the outer member are arranged circumferentially on the outer peripheral side of the edge of the concave portion in the inner member. This is in a distributed manner.

  According to the above characteristic configuration, the plurality of connecting portions that connect the inner member and the outer member are provided in a circumferentially distributed manner on the outer peripheral side of the edge portion of the concave portion in the inner member. It becomes possible to suppress exposure to steam. Therefore, deterioration of a plurality of connecting portions can also be suppressed.

According to a further feature of the lid of the electric water heater according to the present invention, a safety valve portion is provided in the middle of the steam passage to prevent leakage of hot water through the steam passage, and the safety valve portion is connected to the steam inlet. Comprising a valve storage portion having a valve body provided in the valve storage portion,
The concave portion of the inner member includes a wall portion that is in contact with or close to the upper surface of the inner lid plate,
The valve storage portion is formed integrally with a wall portion of the concave portion of the inner member by resin molding, and the steam inlet is formed in the wall portion so as to communicate with the ventilation chamber. In the point.

According to the above characteristic configuration, since a safety valve portion is provided in the middle of the steam passage to prevent hot water from leaking outside through the steam passage, even if the electric water heater tilts or falls, It is possible to prevent leakage of hot water from the inside of the apparatus main body.
And the valve storage part which comprises the safety valve part is integrally formed with the wall part of the concave part of the inner member by resin molding, and the steam inlet is connected to the venting chamber in the wall part Since it is formed, it is possible to reduce the manufacturing cost while accurately guiding all of the steam flowing into the ventilation chamber to the safety valve portion.
Therefore, the durability of the lid of the electric water heater equipped with a safety valve portion for preventing the hot water from leaking outside through the steam passage can be improved while further reducing the cost.

A further characteristic configuration of the lid of the electric water heater according to the present invention is formed of a heat-resistant material, and is formed of a discharge port cap fitted into the steam discharge port, and a heat-resistant material, and the inner member A communication member is provided for communicating the vent and the discharge cap;
The steam passage is configured to allow steam to flow through the steam outlet, the vent chamber, the vent, the communication member, and the outlet cap and to discharge the steam from the outlet cap to the outside. It is in.

According to the above characteristic configuration, since the steam passage is formed of the heat-resistant material over the entire length of the path, the influence of the steam can be reduced and the durability can be improved.
Moreover, since it is possible to suppress the upper lid member from being exposed to steam as much as possible, it is possible to form the upper lid member with a low heat-resistant resin, and it is possible to reduce the cost and improve the appearance.
Therefore, the durability can be improved while further reducing the cost and improving the appearance.

Perspective view of electric kettle Disassembled perspective view of electric pot lid Vertical side view of electric pot lid Vertical side perspective view of electric pot lid Electrical pot lid rear view Vertical side view showing the main part of the lid of the electric pot Longitudinal side view showing main part of lid of electric pot according to another embodiment

DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment in the case where the present invention is applied to a lid of an electric pot as an electric water heater will be described with reference to the drawings.
As shown in FIG. 1, the electric pot is composed mainly of an apparatus main body 200 configured in a generally open container shape and a lid 100 covering the opening (not shown).
The apparatus main body 200 will be described briefly without detailed description and illustration. An electric heater (not shown) for heating hot water stored in an internal storage part (not shown), and discharging hot water in the storage part. A pump (not shown) for discharging from the outlet 201, an operation unit 202, and the like are provided.
The lid 100 is attached to the apparatus main body 200 so as to be swingable by a lateral swing shaft 1 (see FIGS. 2 to 4) provided at the rear portion thereof, and the device is moved by swinging of the cover 100 on the swing shaft 1. The opening of the main body 200 is configured to open and close.

As shown in FIGS. 2 and 3, the lid 100 includes a heat insulating material between the upper lid member 2, the lower lid member 3 below the upper lid member 2, and the inner lid plate 4 below the upper lid member 2. 5 is assembled and integrated in a state filled with 5.
3 to 5, the steam passage 6 for discharging the steam generated from the apparatus main body 200 below the inner lid plate 4 to the outside includes the inner lid plate 4, the lower lid member 3, The heat insulating material 5 and the upper lid member 2 are provided.
Further, a safety valve portion 7 for preventing hot water from leaking outside through the steam passage 6 is provided in the middle of the steam passage 6. The safety valve portion 7 includes a valve storage portion 72 having a steam inlet 71 and its valve storage. And a valve body 73 provided in the portion 72.

As shown in FIGS. 2 to 4, in the present invention, the lower lid member 3 includes an outer member 31 having an opening 31 a and an inner member 32 disposed so as to close the opening 31 a of the outer member 31. It is prepared for.
The inner member 32 is formed of a heat-resistant material so as to have a concave portion 32a that opens downward and a vent 32b that communicates the inside and outside of the concave portion 32a.
The inner member 32 is provided in a state where the edge portion 32g of the concave portion 32a is close to the upper surface of the inner lid plate 4 over the entire circumference, and ventilation is provided between the concave portion 32a of the inner member 32 and the upper surface of the inner lid plate 4. The chamber 8 is partitioned and a steam delivery port 41 communicating with the ventilation chamber 8 is provided on the inner lid plate 4.
As shown in FIGS. 3 to 5, the steam passage 6 allows the steam generated from the apparatus main body 200 to pass through the steam outlet 41, the vent chamber 8, the steam inlet 71, the safety valve portion 7, and the vent 32 b of the inner lid plate 4. In addition, it is configured to flow through the steam discharge port 2a of the upper lid member 2 and discharge to the outside from the vapor discharge port 2a.

  As shown in FIGS. 2 to 5, in this embodiment, the recessed portion 32 a of the inner member 32 includes a wall portion 32 c close to the upper surface of the inner lid plate 4, and the valve storage portion 72 is formed by resin molding. In addition to being formed integrally with the wall portion 32 c of the concave portion 32 a of 32, a steam inlet 71 is formed in the wall portion 32 c so as to communicate with the ventilation chamber 8.

A description will be given of each part of the lid 100.
As shown in FIGS. 2 to 4, the upper lid member 2 is provided with an opening operation lever 9 for opening the lid 100, which is positioned at the front portion thereof. The steam discharge port 2 a includes a plurality of opening operation levers 9. A discharge port cap 10 having a vapor discharge slit 10a is fitted. Although the details will be described later, the discharge port cap 10 is attached to the inner member 32 of the lower lid member 3 by two screws 15. In the lid 100, the direction in which the swing shaft 1 and the opening operation lever 9 are arranged is the front-rear direction.
The discharge port cap 10 is formed by a molding process using a heat-resistant resin such as PPS (polyphenylene sulfide) or SPS (gindiotactic polystyrene), and the upper lid member 2 is PP (having lower heat resistance than a heat-resistant resin such as PPS or SPS). It is formed by molding with a low heat resistant resin such as (polypropylene) resin. Incidentally, since the low heat-resistant resin such as PP resin is glossy and easily colored in a desired color, the appearance of the lid 100 can be improved by forming the upper lid member 2 that forms the upper surface of the lid 100 with the low heat-resistant resin. Can be improved.

As shown in FIGS. 2 to 4, the outer member 31 of the lower lid member 3 forms a side peripheral surface of the lid 100, and has a substantially cylindrical shape with a partition wall portion 31 b in the middle in the axial direction. The opening 31a that is configured and is blocked by the inner member 32 is provided in the partition wall 31b in the shape of a long hole whose longitudinal direction is along the front-rear direction.
As shown in FIGS. 2 and 4, a plurality (four in this embodiment) of screw hole portions 31 c opening downward are provided in the circumferential direction on the outer peripheral portion of the opening portion 31 a in the partition wall portion 31 b of the outer member 31. As shown in FIGS. 3 to 5, an annular packing fitting portion 31 d protrudes from the lower end opening edge of the outer member 31.
Further, as shown in FIGS. 3 and 4, the swing shaft 1 is provided on the outer periphery of the rear portion of the upper opening of the outer member 31.

The outer member 31 of the lower lid member 3 is formed by molding using a low heat resistant resin such as PP resin.
The outer appearance of the lid 100 can be improved by forming the outer member 31 of the lower lid member 3 forming the side peripheral surface of the lid 100 with a low heat-resistant resin that is glossy and easily colored in a desired color.

As shown in FIGS. 2 to 4, the inner member 32 of the lower lid member 3 includes an annular wall portion 32 c having a generally oval cross-sectional shape that can be fitted into the opening 31 a of the outer member 31, and an annular wall. 32 d of ceiling part 32d which covers the upper part of part 32c, and a slightly upper bowl-like part 32e of the lower end of annular wall part 32c are constituted, and it is said concave shape by annular wall part 32c and ceiling part 32d which covers the upper part. The part 32a is configured. And the part below the collar-shaped part 32e in the cyclic | annular wall part 32c is equivalent to the edge part 32g of the concave-shaped part 32a.
The ceiling portion 32d of the concave portion 32a has a two-stage structure including a low ceiling portion having a low height on one end side in the longitudinal direction of the concave portion and a high ceiling portion having a height higher than the low ceiling portion on the other end side in the longitudinal direction of the concave portion. The vent 32b is provided in the high ceiling portion of the ceiling portion 32d.

  As shown in FIGS. 3 and 4, when the inner member 32 is disposed in a state in which the concave portion 32 a is fitted into the opening 31 a of the outer member 31, the upper surface of the hook-shaped portion 32 e of the inner member 32 is the outer side. As shown in FIGS. 2 and 4, a plurality of screw holes 31 c of the outer member 31 communicate with the plurality of screw holes 31 c of the inner member 32, as shown in FIGS. 2 and 4. Screw insertion holes 32f (four in this embodiment) are formed.

As shown in FIGS. 3, 4, and 6, an annular member is formed on the lower side of the flange portion 32 e of the inner member 32 by a corner portion formed in an annular shape by the flange portion 32 e and the annular wall portion 32 c. A fitting portion 12 for fitting the lower sealing member 11 is configured.
That is, on the outer peripheral side of the edge portion 32g of the concave portion 32a of the inner member 32, the fitting portion 12 that opens obliquely downward toward the outer side is provided in an annular shape along the circumferential direction of the concave portion 32a. The stop member 11 is provided so as to be fitted in the fitting portion 12 in a state of being in contact with the upper surface of the inner lid plate 4.
As shown in FIGS. 2 to 4 and 6, the upper surface of the flange-shaped portion 32 e of the inner member 32 surrounds the outer peripheral side of the concave portion 32 a and the lower surface of the partition wall portion 31 b of the outer member 31. An annular upper sealing member 13 that seals the upper surface of the flange portion 32e of the inner member 32 is disposed.
These lower sealing member 11 and upper sealing member 13 are formed of silicon rubber or the like having excellent heat resistance.

As shown in FIGS. 2, 4, and 5, the inner member 32 of the lower lid member 3 is integrally provided with two valve storage portions 72 each having an inverted truncated cone shape and a bottomed cylindrical shape. ing.
Specifically, the two valve storage portions 72 are formed integrally with a portion of the wall portion 32c of the concave portion 32a that is continuous with the high ceiling portion of the ceiling portion 32d in a state of being aligned along the circumferential direction of the concave portion 32a. Has been.
As shown in FIG. 2, a plurality of ribs 72 a along the axial direction are provided on the inner peripheral surface of each valve storage portion 72 at intervals in the circumferential direction.
As shown in FIG. 5, the valve body 73 is formed in an inverted truncated cone shape whose length in the axial direction is shorter than the length in the axial direction of the valve storage portion 72, and the valve body 73 includes a plurality of ribs 72 a. Are accommodated in the valve accommodating portion 72 so as to be movable in the vertical direction.
As shown in FIG.2 and FIG.5, the upper opening of each of the two valve storage parts 72 is opened to the high ceiling part of the ceiling part 32d of the concave part 32a, and the upper openings of these valve storage parts 72 are It is used as the vent 32b.
As shown in FIGS. 4 and 5, the steam inlet 71 is provided in a portion of the peripheral wall portion of each of the two valve storage portions 72 that faces the recessed portion 32 a.

As shown in FIGS. 3 to 5, the upper opening of the valve storage portion 72 used as the vent 32 b and the discharge cap 10 are communicated with an upper portion of the ceiling portion 32 d of the concave portion 32 a. A valve hole member 14 is provided as a communicating member. The valve hole member 14 is provided with a main valve hole 14a that communicates with the two valve storage portions 72 separately, and an auxiliary valve hole 14b having a smaller diameter than the main valve hole 14a. The valve hole member 14 is attached to the ceiling portion 32 d of the concave portion 32 a of the inner member 32 together with the discharge port cap 10 with two screws 15.
In other words, in this embodiment, the steam passage 6 allows the steam generated from the apparatus main body 200 to pass through the steam outlet 41, the vent chamber 8, the steam inlet 71, the safety valve section 7, the vent 32b, and the valve hole member 14 of the inner lid plate 4. The exhaust port cap 10 is made to flow and is discharged from the discharge port cap 10 to the outside.

As described above, the inner member 32 of the lower lid member 3 and the valve hole member 14 integrally including the two valve storage portions 72 are formed by a molding process using a heat resistant resin such as PPS or SPS.
The inner member 32 of the lower lid member 3 is entirely covered by the outer member 31, the upper lid member 2 and the inner lid plate 4 of the lower lid member 3, so that the inner member 32 of the lower lid member 3 has no gloss and is colored. Even if it is formed of a heat resistant resin that is difficult to do, the appearance of the lid 100 is not impaired.

As shown in FIGS. 2 to 5, the heat insulating material 5 is formed into a shape that can be filled in a space formed between the upper lid member 2 and the lower lid member 3 by molding with a resin having excellent heat insulation properties. The
Then, as described above, the lower lid member 3 is constituted by the outer member 31 and the inner member 32, and the vent chamber 8 that constitutes the steam passage 6 is formed by the concave portion 32a of the inner member 32, whereby the lower lid member 3, a wide space can be secured between the outer member 31 and the upper lid member 2, so that the space between the lower lid member 3 and the upper lid member 4 can be effectively used for filling the heat-resistant material 5. This can improve the energy saving effect.

As shown in FIGS. 2 to 4, the inner lid plate 4 is formed in a dome shape having a substantially circular cross-sectional shape, and the lower sealing member 11 and the concave portion 32 a are formed on the upper surface of the ceiling portion. The groove portion 42 into which the edge portion 32g of the lower lid member 3 can be fitted is provided in an annular shape, and the opening edge portion of the inner lid plate 4 can be contacted with the packing fitting portion 31d of the outer member 31 of the lower lid member 3. 43 is provided.
A plurality of (five in this embodiment) large-diameter steam outlets are provided as one of the steam outlets 41 at one end side in the longitudinal direction at a portion inside the annular groove 42 in the ceiling portion of the inner lid plate 4. 41b is formed, and a plurality of (four in this embodiment) small-diameter steam outlets 41s having a smaller diameter than the large-diameter steam outlet 41b are formed as the steam outlet 41 on the other end side in the longitudinal direction. Yes.

As shown in FIGS. 2 and 4, on the outer peripheral side of the annular groove portion 42 in the ceiling portion of the inner lid plate 4, a plurality (this) communicates with the plurality of screw insertion holes 32f of the flange portion 32e of the inner member 32, respectively. In the embodiment, four screw insertion holes 44 are provided.
The inner lid plate 4 is formed by a molding process using a metal plate.

As shown in FIGS. 2 to 4, a dish-like steam valve 16 having a steam hole 16 a at the bottom is provided on the inner side of the annular groove 42 on the upper surface of the ceiling portion of the inner lid plate 4. It is provided so as to cover the plurality of large-diameter steam outlets 41b in a posture to be on the upper side.
An annular main body side sealing member 17 is provided in a state of being fitted on the packing fitting portion 31d of the outer member 31 and the flange portion 43 of the inner lid plate 4 which are in contact with each other, and the lid 100 is provided. When the apparatus main body 200 is swung in a posture to close the opening, the main body side sealing member 17 is configured to come into contact with the inner surface of the opening edge of the apparatus main body 200 to prevent vapor leakage.

Next, a description will be given of the procedure for assembling the lid 100 by assembling a plurality of types of constituent members as described above.
First, the inner cover plate 4, the outer member 31 of the lower cover member 3, and the inner member 32 of the lower cover member 3 integrally provided with the two valve storage portions 72 are arranged as follows.
That is, as shown in FIGS. 2 to 4, the lower end portion of the annular wall portion 32 c (the edge portion 32 g of the concave portion 32 a) and the annular lower sealing member 11 in the inner member 32 of the lower lid member 3 are covered with the inner lid. The inner member 32 of the lower lid member 3 is arranged on the upper surface side of the inner lid plate 4 in a posture fitted into the annular groove 42 on the upper surface of the plate 4.
In addition, the upper sealing member 13 is disposed on the upper surface of the flange-shaped portion 32e of the inner member 32 of the lower lid member 3, and the outer member 31 of the lower lid member 3 is disposed in the opening 31a and the inner member 32 of the lower lid member 3 is disposed in the opening 31a. It arrange | positions in the state which inserted the recessed part 32a in.
2 and 4, the plurality of screws 18 are respectively inserted into the screw insertion holes 44 of the inner lid plate 4 and the screw insertion holes 32f of the inner member 32 of the lower lid member 3, By screwing into the screw hole 31c of the outer member 31 of the lid member 3, the inner member 32 and the lower lid member 3 of the lower lid member 3 integrally including the inner lid plate 4 and the two valve storage portions 72 are provided. These outer members 31 are assembled together at once.

  That is, the inner member 32 and the outer member 31 of the lower lid member 3 are connected by the screw insertion hole 44 of the inner lid plate 4, the screw insertion hole 32 f of the inner member 32, the screw hole portion 31 c of the outer member 31, and the screw 18. The connection part C is comprised and the some connection part C is distributed and provided in the outer peripheral side of the edge part 32g of the recessed part 32a in the inner side member 32 in the circumferential direction. In this embodiment, the connecting portion C is configured as a screw.

When the inner lid plate 4, the inner member 32 of the lower lid member 3, and the outer member 31 of the lower lid member 3 are assembled together as described above, the lower sealing member 11 becomes the inner member 32 as shown in FIG. The lower sealing member 11 and the edge portion 32g of the concave portion 32a (the lower end portion of the wall portion 32c) are fitted into the groove portion 42 while being sandwiched between the lower surface of the flange portion 32e and the bottom surface of the groove portion 42. It will be. That is, the lower surface of the hook-shaped portion 32 e of the inner member 32 corresponds to a part of the inner surface of the fitting portion 12, so that the lower sealing member 11 is sandwiched between the inner surface of the fitting portion 12 and the inner surface of the groove portion 42. In this state, the lower sealing member 11 and the edge 32g of the concave portion 32 are fitted in the groove 42.
Further, the upper sealing member 13 is sandwiched between the lower surface of the partition wall portion 31b of the outer member 31 and the upper surface of the flange-shaped portion 32e of the inner member 32, and the space between them is hermetically sealed. .

Next, as shown in FIGS. 3 to 5, the valve hole member 14 and the discharge port cap 10 are attached to the ceiling portion 32 d of the concave portion 32 a in the inner member 32 of the lower lid member 3 with two screws 15.
The valve hole member 14 and the outlet cap 10 are attached to the ceiling portion 32d of the concave portion 32a so that the inner member 32 of the lower lid member 3 is integrated with the inner lid plate 4 and the outer member 31 of the lower lid member 3. It may be before assembly.

Next, the heat insulating material 5 is attached to the upper part of the outer member 31 using a plurality of screws (not shown) in a state where the heat insulating material 5 is filled in the lower lid member 3 including the inner member 32 and the outer member 31.
In this way, the lid 100 is configured.

In the electric pot lid 100 configured as described above, as shown in FIGS. 3 to 5, the steam generated from the apparatus main body 200 passes through the plurality of steam delivery ports 41 of the inner lid plate 4 to the ventilation chamber 8. And then flows into the two valve storage parts 72 through the two steam inlets 71, and further flows out of the two valve storage parts 72 through the main valve hole 14a and the auxiliary valve hole 14b. , And discharged from the discharge cap 10 to the outside.
Of the lower lid member 3 composed of the outer member 31 and the inner member 32, only the inner member 32 is exposed to the steam. By forming the inner member 32 with heat-resistant resin, It is possible to improve the durability by reducing the influence as much as possible. On the other hand, since the outer member 31 is not exposed to steam, even if it is formed of a low heat resistant resin, deterioration can be prevented.
That is, since the members constituting the steam passage 6 (the inner lid plate 4, the inner member 32 of the lower lid member 3, the valve hole member 14 and the discharge port cap 10) are all made of a heat-resistant material, the influence of steam is exerted. The durability can be improved by reducing as much as possible.
Moreover, the outer member 31 of the lower lid member 3 that forms the side peripheral surface of the lid 100 and the upper lid member 2 that forms the upper surface of the lid 100 are formed of a low heat-resistant resin that is glossy and easily colored in a desired color. Therefore, the appearance of the lid 100 can be improved.

Further, since the safety valve portion 7 is provided, even if the electric pot falls down, the valve body 73 housed in the two valve housing portions 72 moves to move the main valve hole 14a and the auxiliary valve hole. Since 14b is closed, leakage of hot water can be prevented.
By the way, when the lid 100 is abruptly closed during boiling or immediately after boiling, each valve body 73 may rise and the main valve hole 14a and the auxiliary valve hole 14b may be closed.
Even in such a case, since the diameters of the main valve hole 14a and the auxiliary valve hole 14b are made different, the small diameter auxiliary valve hole 14b can be opened first, and the internal pressure in the storage portion of the apparatus main body 200 abruptly increases. It can be prevented from rising.

[Another embodiment]
Next, another embodiment will be described.
(1) The shape of the concave portion 32a of the inner member 32 is limited to the shape exemplified in the above embodiment, that is, the shape constituted by the annular wall portion 32c and the ceiling portion 32d covering the upper portion of the wall portion 32c. It can be made into various shapes.
For example, in the above embodiment, the ceiling portion 32d is configured to have a two-stage height, but may be configured to have a uniform height.
The shape of the concave portion 32a may be a shape like a part of a sphere.

(2) The arrangement configuration of the lower sealing member 11 is not limited to the configuration described in the above embodiment.
For example, as shown in FIG. 7, a convex portion 45 in which the lower sealing member 11 can be fitted on the inner peripheral side is provided in an annular shape on the upper surface of the inner lid plate 4. And the lower side sealing member 11 is comprised by the corner | angular part of the upper surface of the inner cover board 4 formed in the inner peripheral side of the convex part 45, and the fitting part 12 (The corner | angular part of the hook-shaped part 32e and the wall part 32c). May be used.

(3) The plurality of connecting portions C that connect the inner member 32 and the outer member 31 may be provided in the circumferential direction on the inner peripheral side of the edge portion 32g of the concave portion 32a in the inner member 32.

(4) In the above embodiment, the inner lid plate 4, the inner member 32 of the lower lid member 3, and the outer side of the lower lid member 3 are connected by the connecting portion C that couples the inner member 32 and the outer member 31 of the lower lid member 3. The members 31 are connected at once, but the inner member 32 and the outer member 31 of the lower lid member 3 are connected by the connecting portion C, and the inner lid plate 4 and the outer member of the lower lid member 3 are connected by another connecting portion. You may comprise so that 31 may be connected.
Further, in the above embodiment, the screw insertion hole 44 of the inner lid plate 4, the screw insertion hole 32 f of the inner member 32, and the screw hole portion 31 c of the outer member 31 are inserted or screwed with the screw 18 and connected at once. Although the portion C was used, the screw insertion hole 44 of the inner cover plate 4 and the screw hole portion 31c of the outer member 31 were inserted or screwed with the screw 18 without inserting the screw insertion hole 32f of the inner member 32, You may comprise the connection part C so that the inner member 32 (hook part 32e) may be pinched | interposed and connected between the cover plate 4 and the outer side member 31. FIG.
Furthermore, the connection part C which connects the inner member 32 and the outer member 31 of the lower lid member 3 is not limited to the screw type illustrated in the above embodiment, and, for example, the collar part and the collar part are fitted. A fitting type composed of possible fitting portions may be used.

(5) In the above embodiment, the valve storage part 72 of the safety valve part 7 and the inner member 32 of the lower cover member 3 are integrally molded. However, the valve storage part 72 of the safety valve part 7 and the lower cover member 3 The inner member 32 may be configured as a separate body and assembled in a form in which the steam inlet 71 of the valve storage portion 72 communicates with the concave portion 32a.

(6) In the above embodiment, the inner member 32 is provided in a state in which the edge portion 32g of the concave portion 32a is close to the upper surface of the inner lid plate 4 over the entire circumference, but the inner member 32 is provided with the edge of the concave portion 32a. You may provide in the state which the part 32g contact | abuts on the upper surface of the inner cover board 4 over a perimeter.

(7) In the above embodiment, the discharge port cap 10 is fitted into the vapor discharge port 2 a of the upper lid member 2, and the steam is passed through the discharge port cap 10 so as to be directly discharged to the outside. However, the discharge port cap 10 may be omitted and the steam may be directly passed through the vapor discharge port 2a of the upper lid member 2.

(8) In the above embodiment, the case where the present invention is applied to the lid 100 of the electric pot has been described. However, the present invention is not limited to the electric pot, but various electric water heaters such as an electric kettle and a boiling humidifier. It can be applied to the lid.

  As described above, it is possible to provide a lid for an electric water heater that can improve the durability while reducing the cost.

2 Upper lid member 2a Steam outlet 3 Lower lid member 4 Inner lid plate 6 Steam passage 7 Safety valve portion 8 Vent chamber 10 Outlet cap 11 Lower sealing member (sealing member)
12 fitting part 14 valve hole member (communication member)
31 Outer member 31a Opening portion 32 Inner member 32a Concave portion 32b Vent port 32c Wall portion 32g Edge portion 41 Steam outlet 42 Groove portion 71 Steam inlet 72 Valve storage portion 73 Valve body 100 Lid 200 Device main body C Connecting portion

Claims (6)

The upper lid member, the lower lid member below the upper lid member, and the inner lid plate below the upper lid member are integrally assembled,
A steam passage for discharging steam generated from the apparatus main body below the inner lid plate to the outside is a lid of an electric water heater provided through the inner lid plate, the lower lid member, and the upper lid member,
The lower lid member is configured to include an outer member having an opening and an inner member arranged to close the opening of the outer member,
The inner member is formed of a heat-resistant material in a state having a concave portion that opens downward and a vent that communicates the inside and outside of the concave portion.
The inner member is provided in a state where the edge of the concave portion is in contact with or close to the upper surface of the inner lid plate over the entire circumference, and between the concave portion of the inner member and the upper surface of the inner lid plate. A ventilation chamber is formed as a partition,
The inner lid plate is provided with a steam outlet communicating with the vent chamber,
The steam passage allows the steam generated from the apparatus main body to flow through the steam delivery port of the inner lid plate, the vent chamber, the vent port, and the steam discharge port of the upper lid member, and from the steam discharge port to the outside. A lid of an electric kettle configured to discharge. On the outer peripheral side of the edge of the concave portion of the inner member, a fitting portion that opens obliquely downward toward the outer side is provided annularly along the circumferential direction of the concave portion,
The lid of the electric water heater according to claim 1, wherein an annular sealing member is provided so as to be fitted in the fitting portion in a state of being in contact with the upper surface of the inner lid plate. On the upper surface of the inner lid plate, a groove portion into which the sealing member and the edge of the concave portion can be fitted is provided in an annular shape,
The edge part of the said sealing member and the said recessed part is engage | inserted by the said groove part in the state clamped between the inner surface of the said fitting part and the inner surface of the said groove part. Electric water heater lid.   The some connection part which connects the said inner member and the said outer member is disperse | distributed and provided in the circumferential direction at the outer peripheral side of the edge of the said recessed part in the said inner member. The lid of the electric water heater according to the item. A safety valve portion for preventing hot water from leaking outside through the steam passage is provided in the middle of the steam passage, and the safety valve portion includes a valve housing portion having a steam inlet and a valve body provided in the valve housing portion. And configured with
The concave portion of the inner member includes a wall portion that is in contact with or close to the upper surface of the inner lid plate,
The valve storage portion is formed integrally with a wall portion of the concave portion of the inner member by resin molding, and the steam inlet is formed in the wall portion so as to communicate with the ventilation chamber. The lid | cover of the electric water heater of any one of Claims 1-4. A discharge port cap that is formed of a heat-resistant material and is fitted into the steam discharge port, and a communication member that is formed of a heat-resistant material and communicates the vent hole and the discharge port cap of the inner member are provided. ,
The steam passage is configured to allow steam to flow through the steam outlet, the vent chamber, the vent, the communication member, and the discharge cap, and to discharge the vapor from the discharge cap. Item 6. The electric water heater lid according to any one of Items 1 to 5.

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